Every second 5 people are born and 2 people die, a net gain of 3 people.
At this rate, the world population will double every 40 years and would
be 12 billion in 40 years, 24 billion in 80 years, and more than 48
billion in 120 years. However the United Nations estimate that world
population will stabilize at 12 billion in 120 years, citing that
effective family planning will result in a universally low birth rate.
Education plays a key role: almost half of the 6 billion people are
under age 25.
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